package com.w.domain;

import lombok.Data;
import lombok.ToString;

import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashSet;

@ToString
@Data
public class User {

   private String ip;

   private String username;

   private String info;

   private Date data;

   private String address;

   public static void main(String[] args) {
      HashMap

   }
}
